S42.035K Nondisplaced fracture of lateral end of left clavicle, subsequent encounter for fracture with nonunion

Name of the Condition

• Nondisplaced fracture of lateral end of left clavicle, subsequent encounter for fracture with nonunion

Summary

A nondisplaced fracture of the lateral end of the left clavicle with nonunion is a break in the outer portion of the left collarbone where the bone fragments remain aligned, but healing has not occurred after an expected time frame. This condition represents a subsequent encounter for treatment, indicating ongoing management of the fracture. The lateral end of the clavicle connects to the shoulder, and nonunion may result from inadequate healing or persistent instability at the fracture site.

Causes

Clavicle fractures typically result from direct trauma to the shoulder, such as a fall onto the shoulder, a blow to the area, or a forceful impact during sports or accidents. Nonunion may develop due to insufficient immobilization, poor blood supply to the fracture site, or excessive movement before healing is complete. Falls onto an outstretched hand may also transmit stress to the clavicle, leading to fracture and potential nonunion if healing is compromised.

Risk Factors

• Participation in contact sports or high-impact activities.
• Osteoporosis or weakened bone density.
• Older age, due to increased fall risk and bone fragility.
• Previous shoulder or clavicle injuries.
• Smoking or poor nutrition, which can impair bone healing.
• Inadequate initial treatment or immobilization of the fracture.

Symptoms

• Persistent pain, swelling, or tenderness over the lateral clavicle.
• Bruising or discoloration around the shoulder that does not resolve.
• Difficulty moving the arm or shoulder, especially with overhead activities.
• A visible bump or deformity at the fracture site that remains unchanged over time.
• Possible clicking or grinding sensation with shoulder movement.

Diagnosis

Diagnosis begins with a physical examination to assess pain, swelling, and deformity. Imaging, typically X-rays, confirms the fracture and evaluates for nonunion by showing a persistent gap or lack of bone healing. In complex cases, CT or MRI may be used to assess bone union and surrounding soft tissue. Clinical history, including the time since injury and prior treatment, is critical to determine the fracture's status.

Treatment Options

Treatment focuses on promoting healing and may include immobilization with a sling or brace to reduce stress on the fracture. Surgical intervention, such as open reduction and internal fixation, may be considered if nonunion persists or causes functional impairment. Physical therapy is often recommended to restore strength and mobility once healing is underway. Pain management and activity modification are also part of the care plan.

Prognosis and Follow-Up

Prognosis depends on the severity of nonunion and response to treatment. Most patients achieve satisfactory healing with appropriate management, though recovery may take several months. Regular follow-up with imaging is necessary to monitor progress. Long-term outcomes are generally good, but some individuals may experience residual stiffness or weakness in the shoulder.

Complications

• Chronic pain or discomfort at the fracture site.
• Limited range of motion or shoulder dysfunction.
• Need for additional surgery if nonunion does not resolve.
• Potential for arthritis in the acromioclavicular joint over time.
• Nerve or blood vessel injury in rare cases.

Lifestyle & Prevention

• Avoid high-impact activities until cleared by a healthcare provider.
• Use protective gear during sports to reduce injury risk.
• Maintain bone health through a balanced diet and regular exercise.
• Follow post-injury care instructions carefully to support healing.
• Quit smoking, as it can impair bone healing.

When to Seek Professional Help

Seek medical attention if pain worsens, swelling increases, or new symptoms like numbness or discoloration develop. Persistent difficulty moving the arm or shoulder, or if the fracture site feels unstable, also warrants evaluation. Follow-up is essential if symptoms do not improve with conservative treatment.

Tips for Medical Coders

This code represents a subsequent encounter for a nondisplaced fracture of the lateral end of the left clavicle with nonunion. Documentation should specify the fracture's location, laterality, and the presence of nonunion. Include details about the encounter type (subsequent) and any treatments or evaluations performed. Ensure the record reflects the ongoing management of the nonunion to support accurate coding.